Improvement in dental file-holders and polishers



H. LAURENCE.

Improvement in Dent al-File Holders and Polishers.

No. 115,070. Patented Ma 23,1871.

AM.PHOI0-IITH06HA PHIL CQN. X (ossanuz's PRDCISS.)

UNITED STATEs PATENT QFFICE.

HENRY LAURENCE, OF NEW ORLEANS, LOUISIANA.

IMPROVEMENT IN DENTAL FILE-HOLDERS AND POLISHERS.

Specification forming part of Letters Patent No. 115,070, dated May 23,1871.

I, HENRY LAURENCE, of New Orleans, in the parish of Orleans and State ofLouisiana, have invented a new and useful Dental File- Holder andPolisher, of which the following is a specification:

My invention relates to an instrument used for filing and polishing theapproximal or files or polishers of different thickness, by eX--tendingthe shank of said movable jaw through an opening in the handle toreceive an adjustin g-nut.

By this improvement a single handle can be easily adapted to receivedifferent sizes and shapes of .tools for either filling or polishing,thereby avoiding the expense of separate holders for each tool.

The accompanying drawing represents elevations and asectional view ofthe instrument, in which A is the handle, having a hollow shank, B,secured thereto in any suitable manner. The end of the shank is providedwith a jaw, a, projecting therefrom at an angle of about thirty degrees.The handle of the instrument is hollow to form a continuation of thetubular shank, and within this shank and handle I arrange a screw-stem,G, which carries at one end a jaw, b, the counterpart of the fixed jawa, and maintaining therewith the same angle, sothat when the two arebrought together they will form a clamp and hold the tool between them.The other end of the screwstem 0 extends beyond the end of the handle Ato receive a screw-nut, 0, which acts against and their contiguous facesmay be rasped or hollowed so as to grasp and hold the tool firmly atsuch an angle to the handle as will at ford great convenience formanipulation.

The instrument may be made of steel or other suitable metal, or ofacombination of different materials.

I do not confine myself to the means forudjusting the movable jaw, northeir location at the end of the handle, as such adjusting and clampingmeans may be arranged on the side of the handle; but I prefer thearrangement shown. and described.

Having described my invention, I claim- The dental file-holder, as anarticle of manufacture, constructed as described, viz., with a fixed anda movable jaw, tubular shank, and thumb-screw c, the jaws being adaptedto hold a file, as shown.

HENRY LAURENCE.

Witnesses:

J. A. DE HART, EDWARD J. DE HART.

